division cynodontia
Học thuậtThân thiện
A paleontologist carefully examines a fossil skull from the division Cynodontia.
Definition
- Noun:
- A taxonomic division within the order Therapsida: "Division Cynodontia" refers to a major subgroup of therapsid reptiles that lived primarily during the Triassic period. These animals are characterized by several mammal-like features, notably in their dentition and jaw structure.
Usage
- Noun:
- The fossil record shows that Division Cynodontia includes the ancestors of mammals.
- Paleontologists study Division Cynodontia to understand the transition from reptiles to mammals.
Advanced Usage
- In taxonomic hierarchy: The term is used in scientific classification to denote a specific clade. It is often seen in paleontological literature and evolutionary biology texts.
- The research paper focused on the skeletal adaptations within Division Cynodontia.
Variants and Related Words
- Cynodont (n): A member of the Division Cynodontia.
- This cynodont fossil exhibits advanced jaw muscles.
- Cynodontia: Often used synonymously without "Division," serving as the name of the taxon itself.
- Cynodontia represents a critical stage in synapsid evolution.
Synonyms
- Cynodonts: A common informal term for the members of this division.
- Advanced Therapsids: Describes their position within the broader Therapsida order.
Related Phrases / Terms
- Mammal-like reptiles: A descriptive phrase often associated with Cynodontia due to their transitional features.
- Cynodonts are classic examples of mammal-like reptiles.
- Triassic therapsids: Specifies the geological period when most cynodonts thrived.
A paleontologist carefully examines a fossil skull from the division Cynodontia.
Noun
- a division of the order Therapsida from the Triassic period comprising small carnivorous tetrapod reptiles often with mammal-like teeth